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Models/bytedance/video · text-to-video · image-to-video · reference-to-video · first-last-framePass-through

Seedance 2.0 Fast

Seedance 2.0 Fast keeps the 2.0 family's camera language, multimodal direction, frame control, and synchronized sound while shortening iteration time and cost. MachGen exposes Text to Video, Image to Video, First & Last Frame, and Reference to Video at 480p or 720p, with fixed 4-15 second output or Smart duration.

Current MachGen support
Text to VideoImage to VideoReference to VideoFrame to Frame4-15s480p / 720pPer type: 9 image / 3 video / 3 audio12 references combinedOptional audioBitrate controlSeed control
Starting at $0.05 / s
480p$0.05/s
720p$0.12/s
480p · with input video$0.03/s
720p · with input video$0.07/s
Live public pricebook · input-video rows bill input + output secondsSee full pricebook
Overview

Seedance 2.0 Fast

Seedance 2.0 Fast keeps the 2.0 family's camera language, multimodal direction, frame control, and synchronized sound while shortening iteration time and cost. MachGen exposes Text to Video, Image to Video, First & Last Frame, and Reference to Video at 480p or 720p, with fixed 4-15 second output or Smart duration.

Seedance 2.0 Fast examples for lower-latency cinematic video, native sound, frame transitions, and mixed-media direction.

Model guide

Why choose Seedance 2.0 Fast

Key strengths

  • Faster iteration while retaining Seedance 2.0's directed motion, camera language, multimodal references, and native synchronized sound.
  • One model covers text, a starting image, an ordered frame pair, or up to 9 image, 3 video, and 3 audio references within a 12-file combined limit.
  • Adaptive framing and Smart duration let the model choose composition or timing when fixed delivery controls are unnecessary.
  • Standard and high bitrate modes provide a deliberate file-size-versus-delivery-quality choice.

Good fit for

  • Advertising and social concepts that need several strong iterations before a final render.
  • Camera-led action, product movement, dialogue, and sound-rich short scenes.
  • Frame-controlled transitions where the opening and closing composition are both approved.
  • Multimodal look development using appearance, movement, ambience, and rhythm references together.
Supported on MachGen

Inputs and output settings

This table reflects the model routes and controls currently exposed by MachGen.

ModeRequired inputAvailable settings
Text to VideoText promptResolution: 480p, 720p
Aspect ratio: Adaptive, 21:9, 16:9, 9:16, 1:1, 4:3, 3:4
Duration: 4-15s, Smart
Frame rate: 24fps
Optional generated audio
Seed control
Standard or high bitrate
Image to VideoText prompt and source image; optional end frameResolution: 480p, 720p
Aspect ratio: Adaptive, 21:9, 16:9, 9:16, 1:1, 4:3, 3:4
Duration: 4-15s, Smart
Frame rate: 24fps
Optional generated audio
Seed control
Standard or high bitrate
Reference to VideoPer-type limits: up to 9 images, up to 3 videos, up to 3 audio files; 12 references combined, plus a text promptResolution: 480p, 720p
Aspect ratio: Adaptive, 21:9, 16:9, 9:16, 1:1, 4:3, 3:4
Duration: 4-15s, Smart
Frame rate: 24fps
Optional generated audio
Seed control
Standard or high bitrate
First & Last FrameText prompt, start frame, and end frameResolution: 480p, 720p
Aspect ratio: Adaptive, 21:9, 16:9, 9:16, 1:1, 4:3, 3:4
Duration: 4-15s, Smart
Frame rate: 24fps
Optional generated audio
Seed control
Standard or high bitrate
Workflow

Using Seedance 2.0 Fast

  1. Choose a supported generation mode in Playground.
  2. Add the required prompt and source or reference assets.
  3. Select output settings from the controls shown for that mode.
  4. Generate, then inspect the returned asset before reusing the settings through the API.

Practical guidance

  • Describe the subject, action or composition, environment, and visual direction in a clear order.
  • For image animation, describe the intended motion and camera behavior instead of repeating what is already visible.
  • Give each reference a clear role in the prompt, using the names inserted by the Playground.
  • Use compatible start and end frames, then describe the transition between them.
  • When audio is enabled, include any dialogue, ambience, or sound cues that matter to the scene.
Best results

How to get better Seedance 2.0 Fast results

  • Use Fast to settle the action, shot order, framing, and sound cues before spending on a slower quality tier.
  • Write events in chronological order and separate subject motion, camera motion, dialogue, and sound into readable beats.
  • Name each reference and say exactly what it controls: identity, product detail, movement, location, voice, ambience, or rhythm.
  • Choose high bitrate for examples intended for close inspection or publishing; standard is usually enough for prompt iteration.
Limits

Limits and availability

  • MachGen admits only the modes and settings listed above for this catalog model.
  • Source assets must finish uploading before a request can be submitted.
  • Generated results can vary between requests, including when the same prompt and settings are reused.
  • Seedance 2.0 Fast is pass-through. MachGen sends the request through its upstream provider integration and returns the generated asset.
Learn more

Learn more

For model background, technical details, and architecture, see the Seedance 2.0 Fast API reference.

Try this model in the MachGen Playground.

Official documentation may describe capabilities or parameters that are not currently exposed by MachGen. Use the Inputs and output settings section above as the source of truth for this page.

Pricing

Seedance 2.0 Fast pricing

See Pricing for currently published MachGen rates. When available, the Playground estimate reflects the selected task and output settings.

On MachGen

Seedance 2.0 Fast on MachGen

Deployment: Pass-through. Seedance 2.0 Fast is pass-through. MachGen sends the request through its upstream provider integration and returns the generated asset.

The Playground and API sections on this page list the inputs and output settings exposed for this model.